JPH0983194A - Component mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a production stop when a component becomes out of stock and to enhance the rate of operation of a mounting machine in a component mounting method in which a plurality of component feed parts are provided, in which the component feed part on one side is on standby so as to replenish a component when any component during a component mounting operation becomes out of stock in the component feed part and in which the component mounting operation is continued in the component feed part on the other side. SOLUTION: A component mounting method is provided with a process in which, when a component becomes out of stock during a component mounting operation in a component feed part 4L, it is judged whether a component is replenished to a component feed part 4R in a replenishment position, with a process in which, when the component is not replenished, it is judged whether the component which is out of stock in all the component feed parts 4L, 4R and with a process in which, when the component is out of stock exists in the component feed part 4R in the replenishment position, the component is mounted in the component feed part 4R in the replenishment position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting method in an electronic component mounting machine or the like.

[0002]

2. Description of the Related Art In recent years, with the progress of electronics, it is necessary to further improve the productivity of electronic component mounting machines.

The electronic component mounter of the conventional example will be described below.
This will be described with reference to FIGS. 2, 3 and 4.

FIG. 2 shows a schematic configuration of an electronic component mounter.
Reference numeral 1 denotes a rotary head, which mounts components with a plurality of nozzles 2 provided. An XY table 3 fixes a board on which components are mounted and positions the board under the nozzle 2. Four
L and 4R are component supply units, each of which is equipped with a plurality of part cassettes (component supply means) 5 and positions a desired part cassette 5 under the nozzle 2. A controller 7 controls the entire electronic component mounter. Reference numeral 10 is an indicator for notifying the operator of the occurrence of component shortage, 11 is a board loading means, and 12 is a board unloading means.

Next, referring to FIG. 3, the component supply parts 4L, 4
The operation of R (hereinafter, simply referred to as L and R) will be described. FIG.
(A) is a parts cassette 5 in each parts supply section L, R
Shows the array state of. Both the component supply units L and R have the same component arrangement. This is because even if one of the component supply units L or R runs out of parts during production, the other component supply unit R or R
Or to continue production at L. FIG. 3B shows the movement of the component supply units L and R when a component shortage occurs during production.
In the state shown in (1), the component supply unit L is in production at the operating position, and the component supply unit R is located at the component replenishment position where it does not interfere with the component supply unit L. Here, if the parts are out of state, the state of (2) is brought about. That is, the component supply unit L moves to the component replenishment position, the component supply unit R moves to the operating position, and production is continued. The worker replenishes the component supply unit L.
Furthermore, when the parts run out, the state of (3) occurs. That is, the component supply unit R moves to the component replenishment position, the component supply unit L moves to the operating position, and production is continued. In this way, by switching the component supply units L and R, it is possible to prevent a decrease in the operating rate due to a component shortage.

A conventional component mounting method using a plurality of component supply units as described above will be described in detail with reference to the flowchart of FIG. A component is sucked from the component supply unit L by the nozzle 2 (step # 101), then it is determined whether or not there is a component (step # 102), and if there is a component, it is fixed to the XY table 3. Components are mounted on the board (step # 103). Next, the mounting of all the components that should be mounted on this board with this mounting machine is completed (hereinafter,
It is determined whether or not it is called EOP (step # 10).
4), the operations of steps # 101 to # 103 are repeated until the EOP is reached. When the EOP is reached, the mounted substrate is unloaded and the next substrate is loaded (step # 105).

On the other hand, if the parts are out of stock in step # 102, the parts supply section L is moved to the replenishment position (step #
106), and continue production at the component supply unit R (step #
107- # 111). Here, steps # 107 to # 1
Step 11 is the same process as steps # 101 to # 105. In addition, step # in steps # 107 to # 111
If the parts are out of stock in step 108, the parts supply unit R is moved to the replenishment position (step # 112), and it is determined whether or not parts are being replenished for the parts supply unit L that was previously out of parts. (Step # 113), and if the parts are being replenished, the production is stopped due to the parts running out (step # 121),
If the parts replenishment is completed, the process returns to step # 101 to continue the production at the parts supply unit L.

[0008]

However, in the mounting method as described above, if the worker does not immediately replenish the parts, both the parts supply sections L and R may run out of parts and production may stop. However, there was a problem that the utilization rate decreased. In particular, there is a problem that continuous operation for a long time is difficult when there are few workers such as at night.

In view of the above-mentioned conventional problems, the present invention reduces production stoppages due to shortage of parts and enables long-term continuous operation,
It is an object of the present invention to provide a component mounting method capable of improving the operation rate of a mounting machine.

[0010]

The component mounting method of the present invention is a component mounting method in which a plurality of component supply units are selectively used to mount components, and the same component is copied in a plurality of component supply units when a component shortage occurs. The method is characterized by including a step of determining whether or not the product is out of stock, and a step of supplying a component from a component supply unit that is not out of stock and mounting the component.

Further, a plurality of component supply units are provided, and when one of the component supply units runs out of components during component mounting, the component supply unit waits at the replenishment position for component replenishment, In a component mounting method for continuing component mounting in the other component supply unit, a step of determining whether or not the component supply unit at the replenishment position has been replenished when a component shortage occurs during component mounting, and component replenishment If the parts that have run out of parts when all the parts are out of stock are checked, and if the parts that have run out of parts exist in the parts supply part at the replenishment position In addition, the component has a step of mounting the component in the component supply unit at the replenishment position.

[0012]

According to the component mounting method of the present invention, when a component shortage occurs, all of the plurality of component supply units determine whether or not the component is out of stock. Since the parts are supplied from the parts supply part to mount the parts, the parts can be continuously mounted without stopping the production even if the production tact is slightly reduced due to the replacement of the parts supply part. It is possible to improve the operation rate of the component mounter.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the component mounting method of the present invention will be described below with reference to FIG.

The structure of the component mounter is the same as that described in the conventional example with reference to FIG.
The explanation is cited.

The component mounting method will be described with reference to the flowchart of FIG. The component 2 is sucked from the component supply unit L by the nozzle 2 (step # 1).
It is judged whether the parts are out (step # 2), and if there are parts, X
Components are mounted on the board fixed to the Y table 3 (step # 3). Next, it is determined whether or not all the components to be mounted by the mounting machine have been mounted on the board (hereinafter referred to as EOP) (step # 4), and steps # 1 to # are performed until the EOP is reached. The operation of 3 is repeated. When the EOP is reached, the mounted board is unloaded and the next board is loaded (step # 5).

If the parts are out of stock in step # 2, the parts supply section L is moved to the replenishment position (step # 6), and the parts supply section R continues production (steps # 7 to # 11).
Here, steps # 7 to # 11 are steps # 1 to # 5.
This is the same processing as. In addition, if the parts are out of stock in step # 8 of steps # 7 to # 11, the parts supply unit R is moved to the replenishment position (step # 12), and the parts supply unit L that has previously run out of parts is placed. On the other hand, it is determined whether or not parts are being replenished (step # 13). If the parts replenishment is completed, the process returns to step # 1 to continue the production in the parts supply unit L (steps # 1 to # 5).

On the other hand, if the parts supply unit L that has run out of parts in the determination in step # 13 is still being replenished with parts, the parts that have run out of parts in the parts supply unit L and the parts supply unit It is judged whether or not the parts that have run out of parts in R are different parts (step # 14), and if the parts are the same, mounting of the part is impossible, so production is stopped due to running out of parts. (Step # 21). On the other hand, if it is determined in step # 14 that the components are different components, the components are selectively sucked from both the component supply units L and R (step # 15). Here, for example, in FIG. 3, the component supply unit L
When the part A of the part is out of stock and the part B of the part supply section R is out of stock, the parts necessary for production exist in the part supply part if the parts B and A are in the part supply parts L and R, respectively. Since there is no need to stop production, the parts supply section L
From the component supply unit R, and the components A and C to N from the component supply unit R. Next, it is determined whether or not there is a component (step # 16). If the component is out, it is determined whether or not there is the component in the other component supply unit as in step # 14 (step # 16). 20) If there is a part, the process returns to step # 15 to continue the production, and if there is no part, the process proceeds to step # 21 and the production is stopped due to the parts running out. If there is a component in the judgment of step # 16, the component is mounted on the board fixed to the XY table 3 (step # 17), and the mounting of all the components to be mounted on the board by this mounting machine is completed. (Hereinafter referred to as EOP) is determined (step # 18), and steps # 15 to # 17 are performed until the EOP is reached.
Repeat the operation of. When the EOP is reached, the mounted substrate is unloaded and the next substrate is loaded (step # 19).

As described above, according to the present embodiment, in the case of the conventional example, even in the case where the production is stopped due to the shortage of parts, it is possible to perform the continuous production without stopping the production. .

[0019]

According to the component mounting method of the present invention, as is clear from the above description, when a component shortage occurs, all of the plurality of component supply units determine whether the component is a component shortage,
If one of the parts supply parts does not run out of parts, the parts are supplied from the parts supply part to mount the parts, so there is a slight decrease in the production tact due to replacement of the parts supply part, but production is stopped. It is possible to continuously mount the components without doing so, and it is possible to improve the operation rate of the component mounter.

[Brief description of drawings]

FIG. 1 is a flowchart of a component mounting method according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a schematic configuration of an electronic component mounting machine.

FIG. 3 is an operation explanatory diagram of the electronic component mounting machine when a component supply unit runs out of components.

FIG. 4 is a flowchart of a conventional component mounting method.

[Explanation of reference symbols] 4L parts supply section 4R parts supply section

Claims (2)

[Claims] 1. A component mounting method for mounting a component by selectively using a plurality of component supply units, the step of determining whether or not the same component is out of component in a plurality of component supply units when a component outage occurs, And a step of supplying a component from a component supply unit that is not out of components and mounting the component. 2. A plurality of component supply units are provided, and when one of the component supply units runs out of components during component mounting, the component supply unit waits at the replenishment position for component replenishment, In a component mounting method for continuing component mounting in the other component supply unit, a step of determining whether or not the component supply unit at the replenishment position has been replenished when a component shortage occurs during component mounting, and component replenishment If the parts that have run out of parts when all the parts are out of stock are checked, and if the parts that have run out of parts exist in the parts supply part at the standby position, And a step of mounting the component at a component supply unit at a replenishment position.